Suction device for automatic printing-presses and similar machines.



A. LAGERMAN, JR., & (in. LIfibQTRUM. SUCTION DEVICE FOR AUTOMATICPRINTING PRESSES AND SIMILAR MACHINES.

AIPLICATION FILED JULY 24, 1913. 1,133,807. Patented Mar. 30, 1915..

nnirnn rarsrarnivrorricn .ennxnnnnn. Lasnnivmn, m, or VILLA. ALEXANDRA,LERUM, AND ensrnr HJALIMAR LINDSTRGDL 0F GQTTENBORG, SWEDEN 0FGO'ITENBOR-G, SWEDEN, A CQRPORA ASSIGNORS TO AKTIEBOLAGETPRINCEPS, TIONOF SWEDEN.

SUCTION DEVICE .FGR AUTOMATIC PRINTING-PRESSES AND SIMILAR MACHINES.

To all wizom it may concern:

MAN, Jr., a subject of the King of Sweden, and resident of VillaAlexandra, Lerum, in the Kingdom of Sweden, and GUsTAF HJAL- MARLINnsTRoM, a subject of the King of Sweden, and resident ofBerzeliigatan No. 9, Gottenborg, in the Kingdom of Sweden, have inventedcertain new and useful Improvements in Suction Devices for AutomaticPrinting-Presses and Similar Ma chines, of which the following is aspecification, reference heing had therein to the accompanying drawing.

This invention relates to an improvement inthe suction device providedin printing presses, especially platen printing presses, for the feedingof the paper. As before known, the suction device consists of a suctionpipe, located above the feed-table and extending along its front edge,which suction pipe is provided with a plurality of mouth-piecesextending downward toward the top side of the pile of paper sheets, bymeans of which moutlnpieces the front edge of the top paper sheet issucked upward, so that the said edge will have a free position and agripping and transporting device can seize the said sheet and move thesame to the platen. The machine is so constructed that the sheets of twopiles located abreast on the parts respectively of the bipartitefeed-table can be printed simultaneously. For adapting the suction tothe stiffness, thickness and so on of the paper sheets the saidmouth-pieces are adjustable, for which purpose each of the mouth-piecesis fixed to a sleeve rotatably mounted on the suction pipe, so that byrotating the said sleeve the air passage is opened or closed to a.greater or less extent. Besides the said pipe as a whole can be adjustedby rotating the same around an axis parallel to the longi tudinal axisof the pipe, so that the slanting position of the mouth-pieces withrelation to the top side of the paper pile is changed. However, it isdesirable to control the suction operation in a more convenient man-Specification of Letters Patent.

Application filed July 24, 1913.

Serial No. 780,981.

. ner than by shifting successively the mouth- Be it known that we,ALEXANDER LAGER? pieces, viz. to control the suction operation for eachpaper pile separately according to the nature of the paper by a singlemanipulation. This is effected by the present invention and for thatpurpose the suction pipe is divided into sections and its suctionopenings made adjustable by sets in each section. Furthermore the saidsections are so arranged, that they can be swung individually around anaxis parallel to the axis of the pipe, and are at their adjacent endsprovided with connecting devices, so that the sections can be swungsimultaneously.

In the accompanying drawing Figure 1 shows a part of the frame of themachine and the suction pipe viewed toward one end of the machine. Fig.2 is a side view of the suction pipe and Fig. 3 is a cross section ofthe pipe on the line a to Z) of Fig. 2. Figs. 4 and 5 show details.

The suction pipe 1 is divided transversely at its center into two parts,one part comprising an inner pipe 2 and anouter pipe 3 slid on the pipe2. Sleeves 4, l carrying the mouth-pieces 5, 5 respectively are slid onthe pipe 3. The other part of the pipe 1 comprises in the same mannerthe pipes 52*, 3* and the sleeves a 4% with the n1outh-pieces 5-", 5 Thepipe is provided at its outer ends with downward exnecting the sectionsof the pipe comprises the disks 8, 8, which are fixed to the adjacentends of the sections of the pipe. The surfaces of the said disks facingeach other fit snugly one to the other and the disks can be connected bya jam screw 9, which is in Patented Mar. 3%. i915.

screw-throaded engagement with one of the disksand passes through a slot10 provided in the other disk. A cam piece 11 provided on one of thedisks engages a groove 12 provided in the other disk. The said campieceand groove and the slot 10 are curved shaped with the point 7 as centerpoint and serve as a guide. After the screw 9 has been untightened theparts 2 to 5 inclusive and 2* to 5 inclusive of the pipe can easily berotated one with relation to the other, so that the mouth-pieces can beshifted into the proper position with relation to the pilesrespectively, as stated above. The width of the.pipe is so great and thesaid rotary motion is so limited, that the suction is not interrupted bythe said rotation. For the rotating of the pipe as a whole and lockingthe same links 13 and a locking device 14 are provided. A hose connectsthe right end of the pipe, Fig. 2, and the suction pump, not shown. Thesuction openings 15,- 16 provided in the pipes 52 and 3 at themouth-pieces are shown in Fig. 3. The inner pipe can be rotated insidethe outer pipe by means of the handle 17, which extends through a slotprovided in By rotating the inner pipe the openings 15, 16 are opened orclosed to greater or less extent, so that the suction, efiected by themouth-pieces 5, 5 and 5*, 5 .,is adjusted at all the mouth-pieces ofeach set simultaneously. Consequently, if for instance the paper sheetsin the left pile, located below the mouth-pieces 5, 5 are thinner thanthepaper sheets of the other pile located below the mouth pieces 5", 5"the mouth-pieces first mentioned are closed to a greater extent than thelatter by shifting the corresponding handle 17 correspondingly. Asalready stated the mouth pieces may be rotated individually. Thisswinging movement of the mouth pieces individually is effected manually.One simply seizes one of the sleeves 4, 4B and swings it around thetube 1. The sleeves fit tightly around the tube 1 on account of thefriction, and for this reason no special locking device is needed.However, pins 19 areused for limiting the rotary motion. Owing to thisarrangement the mouth pieces can be adjusted as desired andindependently of the adjustment first mentioned, and such mouth piecesmay be shut ofl", as are not necessary for the feeding of the sheets,dependent on the greater or less width of the sheets. In Fig. 3 one ofthe mouth pieces is shut off. Recesses 18 in the sleeves 4, 4* and pins19 limit the rotary motion mentioned above.

From the above description it will be seen that the inner pipe forms arevolving damper for the adjusting of the suction effected by aplurality of mouth-pieces of one set, while the suction effected by themouth pieces of another set remains unaltered.

The device described above may easily be modified. For instance one ofthe pipes (the inner pipe) may be movable longituthe outer pipe.

'dinally with relation to the other pipe, the

main thing being, that the desired adjustment can easily be effected foreach of the piles of paper sheets and for successive kinds of paper inthe same pile without changing the position of the, mouth-pieces proper.The tables on which the piles are located, are moved upward and downwardfor a short distance in order that the top side of the pile during theupward stroke may be brought into the vicinity of the mouth pieces ortouch the same. In order that the pile may without any shock, the holesprovided for the pins 7, 7 are oval, so that the suction pipe can beraised for some distance from the table. Tension springs 20 fixed to thelowerside of the pipe and to the frame return the pipe to its initialposition, as the table is lowered. Owing to the said arrangement thepressure of the mouth-pieces against the paper never becomes greaterthan is necessary. Two pipes one slid into touch the mouth-pieces theother for the purpose mentioned above may be used also when the suctionpipe is in.

one piece a. 0. when the pipe is not divided transversely into two ormore sections. The invention may be applied also to folding machines,ruling machines and so on.

Having now described our invention, what we claim as new and desire tosecure by Letters Patent is:

1. In a suction device for automatic printing presses and similarmachines, the combination of a suction pipe provided with sets ofsuction openings, and means for adjusting the suction openings of eachset simultaneously and independently of the other set, substantially asdescribed and for the purpose set forth.

2. In a suction device for automatic printing presses and similarmachines, the

'for swinging the sections individually around an axis parallel to theaxis of the pipe, and means for connecting the sections, substantiallyas described and for the purpose set forth.

4. In a suction device for automatic printing presses and similarmachines, the combination of a suction pipe provided signed oursubscribing witnesses.

names in the presence of two ALEXANDER LAGERMAN, JR.

GUSTAF m ALMAR LINDsTniin.

